Tip 3. Don't Cook Pasta All the Way Through Before Using In a Casserole
This sort of goes along with tip #2, but I thought I would give it its own mention since pasta is a mainstay in casseroles (hello lasagna!) and getting the right texture can be tricky. Regular pasta doesn’t really have the chance to cook properly if you add it in its dry state to your casserole. And if you cook it all the way, it turns to mush. Cook your pasta up to 2-4 minutes shy of the suggested cooking time on the package. (Choose 4 minutes if you plan on freezing the casserole.) It should just be very “al dente” before you add it to the casserole, where it will finish cooking perfectly.